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Posted to issues@arrow.apache.org by "davidhcoe (via GitHub)" <gi...@apache.org> on 2024/02/23 22:50:45 UTC

[I] csharp/src/Client: KeyNotFoundException exception when calling ConvertArrowSchema [arrow-adbc]

davidhcoe opened a new issue, #1565:
URL: https://github.com/apache/arrow-adbc/issues/1565

   ### What happened?
   
   Find additional issue regarding to the snowflake getSchemaTable, it throw KeyNotFoundException  exception when calling ConvertArrowSchema.  You could reproduce this error by executing the query “SELECT * FROM PUBLIC.TEST_ALLTYPE_EMPTY” and `reader.GetSchemaTable()`.
   
   I also did some investigation. The exception is throwed from this line: [https://github.com/apache/arrow-adbc/blob/fa8498f39fa69e01cdf2c5557e15cd4e6dc0fac2/csharp/src/Client/SchemaConverter.cs#L69](https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fapache%2Farrow-adbc%2Fblob%2Ffa8498f39fa69e01cdf2c5557e15cd4e6dc0fac2%2Fcsharp%2Fsrc%2FClient%2FSchemaConverter.cs%23L69&data=05%7C02%7CDavid.Coe%40microsoft.com%7Ce3f39cabdc594b0a7a2d08dc341ab63e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C638442536601022025%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=8QlJMJEnUnECCiH5ov2kmzP%2FRZ4Mwu2%2B0LbJMES2Seg%3D&reserved=0). 
   When the type is float, actually the metadata doesn’t contain precision and scale property, leading to the exception.  
   
   Error call stack:
      at System.ThrowHelper.ThrowKeyNotFoundException()
      at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
      at Apache.Arrow.Adbc.Client.SchemaConverter.ConvertArrowSchema(Schema schema, AdbcStatement adbcStatement, DecimalBehavior decimalBehavior) in Apache.Arrow.Adbc.Client\SchemaConverter.cs:line 41
      at Microsoft.Connectors.Snowflake.SnowflakeV2DataReader.GetSchemaTable() in D:\Repos\HybridDataIS\Source\SideBySideConnectors\SnowflakeV2\1.0.0.0\Source\SnowflakeV2DataReader.cs:line 152
   
   ### How can we reproduce the bug?
   
   _No response_
   
   ### Environment/Setup
   
   _No response_


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Re: [I] csharp/src/Client: KeyNotFoundException exception when calling ConvertArrowSchema [arrow-adbc]

Posted by "CurtHagenlocher (via GitHub)" <gi...@apache.org>.
CurtHagenlocher closed issue #1565: csharp/src/Client: KeyNotFoundException  exception when calling ConvertArrowSchema
URL: https://github.com/apache/arrow-adbc/issues/1565


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